Donkoh is expected to be ready for the summer.
Scruggs was drafted 62nd overall by the Houston Texans in 2023.
Penn State's starting quarterback is slated to begin throwing on Saturday after recovering from injuries to both shoulders while with Iowa State.
McSorley will reunite with former Penn State graduate assistant Joe Brady in Buffalo.
The redshirt junior posted a picture of himself in a boot on his Instagram story Thursday morning.
